Nut lock



sep. 27, 1927; r 1,643,484

W. J. BECKFIELD NUT LOCK 7 Filed March 3 1927 Inventor q I w fltmrmgy.Patented'SeptI27 1927. I 1,543,484

UNITED STAT-ES PATENT OFFICE.

mull Joan :anoxFInLn, or rnrsnuaen, rmursnvmm.

nor LOCK.

Application and larch 31, 1027. Serial in. 179,935.

This invention relates to an improvement of the usual generalconstruction, having a 55 in nut locks, and more particularly to aconreaded bore for threaded cooperat1on struction wherein a nut isefiectively locked with the threads on the bolt. 7

on a bolt. In connection with this invention, the nut 5 The inventioncomprehends the provision 4 is provided with an annular recessadjacentof a nut adapted for screw threaded connecthe threaded bore 5 asindicated at '6 which is 0 tion with a bolt in the usual manner, havinprovided with a suitable filler of soft metal. an annular recess formedin the outer face 0 7 such as lead or the like, ada ted to normalthe nutaround the bolt receivin opening ly terminate belowthe end ace of thenu\ I therein having a partial filler 0 lead or as indicated bythenumeral 8 in Fig. 1. other soft metal which is adapted for ready Thecentral portion of this soft metal is 65 apglication on a bolt in theusual manner, threaded the same as the bore 5 of the nut in an a lockingmember having a cylindrical order that it may be readily applied to theprojection on one face having a ,diamondthreaded shank 3 of the bolt.The outer 'surl5 shaped head projecting from said cylindri-- face of thelead contained within the recess cal projection at one s1de of theboltreceiv- 6 normally has an unbroken surface as gen- 70 ing openingtherein, which is adapted to fit erally shown in Fig. 3, ready for itsoperawithin the recess face of the nut, in order tion in looking thenutto the bolt. that the c lindrical projection will prevent Thisinventlon includes a locking member I the flow 0 lead or other softmetal outward 9'which is similar'i'n construction .to a nut .ly he ondthe face of the nut while the dia-, having a threaded bore 10 forthreaded con- 75 mon shaped member will plow the soft manection with theshank of the bolt, and which terial in such a manner as to force it intoon one face has the cylindrical projection 11 firm contact with thethreads on the bolt through whlch the bore 10 extends, and

and cooperate to prevent relative movement which is of a size to fitwithin the annular between the nut and its lockin member. recess 6 ofthe nut 4 as shown in Fig. 1. so The invention comprehen numerous Thiscylindrical projection is provided at other objects residing 1n thespecific con 12 with a diamondhaped head as shown in 'struction' andrelation of the parts which Fi 2, adapted for engagement with the so aremore particularly pointed out in the so metal 7 carried by t e nut 4 inprovidfollowing detailed description, and in the inglt'he lockin actionbetween the member 95 claims directed to a referred form of the 9 t enut 4- an the bolt. invention, it being on erstood however,'that Thislocking of the nut 4 to the bolt is various changes in the size, shapeand relaobtained by first tightening the nut on the I tion of the partsmaybe made without debolt to the proper degree for securing the partingfrom the spirit and scope of the inlates 1 or other material together.The 90 vention as herein set forth. coking member9 is then threadedlymount- In the drawing forming, part of this aped on the shank of thebolt and turned to licationzthe position shown in Fig. 1. In the ap Ii-40 Figure 1 is a vertical sectionalviewthru cation of this lockingmember, the cylin rithe im roved. invention showin the parts in calprojection 11 will first move into the o5 assemb ed and-locked relationnsecuring a and of the recess 6 and immediately followa nut in lockedposition on a bolt. ing the diamond head 12 will engage the Fig. 2 is anend view showin the "face surface of the soft metal '7 and upon being 1of the locking member adapted or'engagefurther turned down on the bolt,it will plow v 1 indicates a-pair of plates or other strucdiamond head=cutting through the surface ment with the nut. I

Fig.] 3 is a view of the outer face of the 13 in Fig. 1 and cause themetal to be disnut s owing the section thereof filled with placed intothe threads of the bolt 2,'throu%h the soft metal. I the compressiveactlon occasioned by t e tures to be secured together with the useofthereof.

a bolt and nut, a bolt being indicated at 2 In.addition, theprojecti0n11awill preand havingtthe threaded shankB. The nut vent theflow ofthe soft metal outwardly of 4 forming part of the presentinvention is the recess of the nut and when the face of .a furrowin thesoft metal as indicated at siderable a bolt and in which the soft themember 9 becomes engaged with the face of the nut 4, the end ofprojection 11 will have-just previously engaged with the soft metal 7 inthe recess 6 and served to further compress the same within the recessto exert 'ts locking action between the bolt and the nut 45, as well asprovide a substantial friction a ainst the end of the projection 11 andaroun the head 12v to prevent detachment of the member 9 from the nut 4without conforce being required to turn the nut.

As a result of this invention, operating in the manner above described,it will be seen that an exceedingly simple construction has beenprovided for efiectively looking a nut to metal wilt not become lost inthe engagement of disengagement of the locking member 9 therefrom, andwhich upon subsequent application of v the locking member to the nut,Will operate time, for comthe threads of in the same manner in eachpressing the soft metal into the bolt Having thus, described myinvention, what I claim as new is A nut lock comprising a. nut having athreaded bolt receiving opening, said nut being formed With an annularrecess in one face around said openings, a soft metal filler partiallyfilling said recess concentrically of said bolt receiving opening in thenut, and a locking member having a threaded bolt receiving opening inthe central portion and an annular projection on one face around saidbolt receiving opening, said projection having a head formed thereon,whereby application of the locking member to a bolt followingapplication of the nut thereto will engage the projection on said memberin the recess in said notch and force the soft metal through thecompressive action of the projection into frictional engagement with thebolt, said soft metalcooperating with the head on said projection tolock the locking member against rotation relative to the bolt,

In testimony whereof I affix my signature.

WILLIAM JOHN BECKFIELD.

